Determine the mass of a billion gold (u) atoms

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04-02-2017
Chemistry

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Determine the mass of a billion gold (u) atoms

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samcintyre3 samcintyre3 · Answer 1 · 2017-02-09T15:26:38+01:00

samcintyre3 samcintyre3

09-02-2017

Therefore, 1 mole of gold weighs 196.9665 grams. So, in 2.8 grams of gold we would have:
(2.8 gram)(1 mole/196.9665 gram) = 0.0142 mole.
From Avogadro's number, we know that there are approximately 6.02 x 1023atoms/mole.

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